Tenaska Gateway Generating Station
TenaskaRusk County
Tenaska Gateway Generating Station is a four-generator natural-gas combined-cycle facility near Long Branch in Rusk County, Texas. EIA's May 2026 inventory reports 939.6 MW nameplate, 826 MW net summer, and 921 MW net winter capability across three combustion turbines and one steam turbine, all with July 2001 operating months. Tenaska's current fleet page uses a separate 845 MW company rating and says the plant supplies both ERCOT and SPP.
Mapped infrastructure geometry associated with this asset.
Tenaska and EIA
All report July 2001
Tenaska official fleet description
Permit 40039 · PSDTX925M1
EIA plant 55132 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| GTG1 | Natural Gas Fired Combined Cycle | Operating | 183.2 | Unknown |
| GTG2 | Natural Gas Fired Combined Cycle | Operating | 183.2 | Unknown |
| GTG3 | Natural Gas Fired Combined Cycle | Operating | 183.2 | Unknown |
| STG1 | Natural Gas Fired Combined Cycle | Operating | 390 |
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| GTG1 | 183.2 MW 157 MW summer | Natural Gas Fired Combined Cycle CT | Jul 2001 | Operating |
| GTG2 | 183.2 MW 150 MW summer | Natural Gas Fired Combined Cycle CT | Jul 2001 | Operating |
| GTG3 | 183.2 MW 138 MW summer | Natural Gas Fired Combined Cycle CT | Jul 2001 | Operating |
| STG1 | 390 MW 381 MW summer | Natural Gas Fired Combined Cycle CA | Jul 2001 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
Tenaska and EIA report that all four current generators entered service in July 2001.
| Unknown |
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
12 ERCOT market resources · Combined-cycle gas
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at TGCCS_ALL over 365 days (2025-10-26 to 2026-10-25). This plant is also crosswalked to TGCCS_CC1, TGF_TGFGT; the point with the deepest price history is shown.
The TB2 figure is a price benchmark, not revenue: it values one perfect-foresight cycle per day between the 2 cheapest and 2 dearest hours of each day, gross of round-trip losses, and excludes ancillary services and any physical dispatch constraint. It describes what this node’s price shape was worth over the window — it is not this asset’s realized capture, and no dispatch is assumed or modelled.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Tenaska marked the station's 25th operating anniversary at the plant.
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Tenaska Gateway Generating Station reports 939.6 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Tenaska Gateway Generating Station is a Natural Gas Fired Combined Cycle facility in Rusk County, TX, participating in the ERCOT market.
Tenaska Gateway Generating Station is in Rusk County, TX, inside the ERCOT balancing area.
Tenaska Gateway Generating Station is operated by Tenaska Gateway Partners Ltd according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Tenaska Gateway Generating Station reported 4,326.9 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Tenaska Gateway Generating Station ranks #105 of 540 operating plants of the same technology nationally. It ranks #16 of 68 in TX.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.